While praising Shaw's determination to bounce back from injury, Mourinho revealed that the striker had decided to work on his fitness ahead of pre-season rather than going on holiday during the summers.

"When I found Luke at the training ground, it was a surprise for me because I thought he couldn't be ready to train without any type of limitation, but he did fantastic in the summer. He sacrificed his holiday," Mourinho was quoted as saying by goal.com.

Shaw, who was sidelined after breaking his leg against PSV in September last year, made his long-awaited comeback in United's 2-0 win over Wigan Athletic on Saturday.